Dawood Salman, K., & Zedain Khalifa, M. . (2016). IMPROVING THE MECHANICAL PROPERTIES OF CK35 STEEL USING ND: YAG LASER SURFACE HARDENING. Journal of Engineering and Sustainable Development, 20(2), 250-258. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/680